宏三角形的大规模地形漫游算法  

A Marco-Triangle-Based Algorithm for Large Terrain Rendering

作　　者：廖昌阊[1] 李辉[1] 潘宏伟[1] 曾安祥[1] 

机构地区：[1]四川大学图像图形研究所,成都610065

出　　处：《电子科技大学学报》2008年第1期120-123,共4页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(60303034)

摘　　要：提出了一种基于了"宏三角形"网格的地形漫游算法(Hyper-ROAM)。该算法可以充分利用现代GPU的硬件特点,实现大规模地形数据的实时连续细节层次渲染。通过改变该算法中的宏三角形内部复杂度,传统的ROAM算法成为了Hyper-ROAM算法的一个特例。实验证明ROAM算法并非是Hyper-ROAM算法所有特例中效率最高的一种,适当选择宏三角形的秩,可以大大提高渲染效率。In this paper, a terrain render algorithm is developed based on marco-triangle conception, which called Hyper real-time optimally adapting meshes algorithm （Hyper-ROAM）. The algorithm can take full advantage of the hardware features of modem GPU, realizing large-scale terrain for real-time continuous level of detail rendering. By adjusting the complexity of macro-triangle, the traditional ROAM becomes a special case of Hyper-ROAM algorithm space. Our tests shown that the traditional ROAM is usually not the best case. It is more efficient to select a proper complexity of the marco-triangles.

关 键 词：连续细节层次 宏三角形 ROAM算法 实时渲染 地形渲染 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]